libisofs: Remove stl dependency

Bug: 434268226
Test: Build and run xorriso
Flag: EXEMPT PURE_REFACTOR
Change-Id: If7464dc0a47f4aeaa6779f6e3e9a3fba9963d4c7

Android.bp

diff --git a/Android.bp b/Android.bp
index 2c5e930..3fe6eef 100644
--- a/Android.bp
+++ b/Android.bp
@@ -72,5 +72,6 @@
         "libisofs/md5.c",
     ],
     export_include_dirs: ["."],
+    stl: "none",
     visibility: ["//external/libburnia:__subpackages__"],
 }